https://www.cnet.com/news/3d-printed-guns-8-states-sue-trump-administration-for-an-emergency-ban/

Eight US states have just sued to stop the distribution of plans for 3D-printed weapons. But it may already be too late.

A multistate lawsuit, filed Monday afternoon, seeks to block a federal government settlement that would give the public access to downloadable plans for 3D-printed weapons.